Main function:
a), Support Full ETTL Pass-through function when on camera
1), Mount one YN-622C transceiver into the hot shoe of camera, and mount other transceiver into the hot shoe of flash, you can trigger the flash at any direction in TTL, Manual or Multi mode.
2), Mount flash on hot shoe of YN-622C transceiver on camera, mount the second flash on other transceiver, both of flashes can be trigger at any direction in TTL, Manual or Multi mode. Note: Speedlites on hot-shoe of transmitter support ETTL II / Manual / Multi
b), Shutter Sync
1), High-speed Synchronous
The max. sync speed is 1/8000s, but some camera is just 1/4000s, and for those cameras and flashes who don't suport HSS, the sync. speed is just 1/250s or less, different cameras have different Sync speed.
2), 1st. Curtain Sync
3), 2nd. Curtain Sync.
c), Remote Control Function
The parameter of flashes on hot shoe of receivers can be set up remotely through the camera manu directly.
d), Supporting mixed mode.
With this function, you can trigger remote speedlites in different modes, set up one YN-622C transceiver on hot shoe of flash in TTL mode, set up the second YN-622C transceiver on hot shoe of flash in manual mode, and the third YN-622C transceiver on hot shoe of flash in multi mode, all three flashes can be fired via the transceiver on hot shoe of camera, this mode is especially useful for those camera bodies without a built-in flash menu. ( you need to set the parameters on speedlites )
Note: Only FEC, FEB, Ratio and Shutter sync can be set in the camera side. Manua and Multi output need to be set on the flash speedlite.
e), Work with Strobe Studio flash light in HSS function
The max. trigger voltage is less than 300 Voltage.
Note: The PC port is for output using only.